Fastening strip for a ventilator



P 26, 1951 w. H. BRASKAMP 3,001,466

' FASTENING STRIP FOR A VENTILATOR Filed June 2, 1959 Fgul 5?. Z

United States Patent 3,001,466 FASTENING STRIP FOR A VENTILATOR Willem Hendrik Braskamp, Voorburg, Netherlands, assignor to N. Industriele Onderneming W. H. Braskamp, Rijswijk, Handelskade, Netherlands, a limited liability company of the Netherlands Filed June 2, 1959, Ser. No. 817,539 Claims priority, application Netherlands June 19, 1958 lClaim. (Cl. 98-96) The invention relates to fastening strips which serve to keep ventilators in place, and more particularly to strips of the type provided with an inwardly directed groove for accommodating a flange of an associated ventilator.

Fastening strips are known which, when the associated ventilator is to be positioned, are placed in an opening, the casing of the ventilator being forced with a radial peripheral flange against the strip. This flange is accommodated in a groove of the strip by means of the previous insertion into the groove of a cord with the aid of which the groove is opened so as to enable a lip of the strip which bounds the groove to engage about the flange. This fastening method is commonly applied to motor car windows. However, for room ventilators, rubber strips are required which are considerably stiller than the strips used for motor car windows, as a result of which the fitting of the ventilator often causes difiiculties, especially when the cord slips out of the groove or breaks.

An object of the invention is to provide a strip which makes the mounting operation considerably simpler than heretofore possible, while taking into account the circumstances in which the fitting generally has to take place. In this regard, for example, it is to be noted that there is usually room for only one man, who has to perform the whole job while standing on a ladder.

According to the invention, a strip is provided with an edge projecting outwards and directed away from the associated opening. The edge is situated in such a way relatively to the groove which is to accommodate the flange of the casing of the ventilator that when a pull is exerted on this edge, the groove is opened. In order to mount the ventilator, it is thus only necessary to force the casing of the ventilator against the strip and subsequently to pull at the freely projecting edge, as a result of which the lip of the groove which bounds the latter engages about the flange of the casing of the ventilator. This method can never fail and cannot give rise to difiiculties. Moreover, a flange or edge is thus formed on the strip, which furnishes a conical air-conducting passage towards the opening, so that this projecting edge will still be useful after the ventilator has been mounted.

The invention will now be disclosed more fully wifl: reference to the accompanying drawing in which:

FIGURE 1 is a sectional view of the structure of the 3,001,466 Patented Sept. 26, 1961 invention before the ventilator has been mounted; and

FIGURE 2 is a similar view after the ventilator has been mounted.

According to the invention, a strip or body 1, consisting of rubber or similar material, has a wide groove 2, spaced abutments 3 being located on the bottom of said groove. Into groove 2 is inserted the edge of a window pane 4 bounding an opening in the latter, said window pane resting with its inner periphery against the abutments 3 on the bottom of the groove. The strip 1 further has a second, narrower groove 5, which serves to accommodate the radially projecting peripheral flange of the casing of the ventilator (not shown). Near this groove, the strip has a continuous edge or lip 6 projecting obliquely outwards from the longitudinal axis A of the casing, which is situated in such a way that, when this edge is pulled in a given place, the groove 5 is opened at this place. This provides that a peripheral flange 7 of the casing of the ventilator can be accommodated in the groove 5. In order to fasten the casing of the ventilator completely, it is necessary to open the groove 5 in a series of places by appropriately pulling the edge 6.

It will be noted that body 1 has an inner surface 8 which engages casing C and that the terminal portion 9 of lip 6 is spaced or oifset from surface S. This facilitates entry of flange 7 into groove 5, the flange further being guided by the linear inclination of lip 6 relative to Surface 8.

There will now be obvious to those skilled in the art many variations of the illustrated structure. These variations will be within the scope of the invention, however, if defined by the following claim.

What is claimed is:

Apparatus comprising a casing having a longitudinal axis and a fastening strip comprising a resilient body adapted for engaging in an opening in a flat structure and supporting said casing therein, the casing including an outwardly extending flange, said body having an inner surface engaging against said casing and being provided with an outwardly directed groove engaging said flat structure and an inwardly directed groove engaging said flange, and a lip on said body at a position spaced from said inner surface and diverging outwardly from said axis and from adjacent said inwardly directed groove whereby a pulling on said lip opens said groove, said lip having a substantially linear inclination relative to said inner surface and thereby serving as a guide for inserting said casing and for subsequent airflow.

References Cited in the file of this patent UNITED STATES PATENTS 

